This firepot is the same as on "my portable
forge". It is about the same size as the Centaur Vulcan Firepot
(9 inche by 13 inch top opening),
except it is 4 1/2 inches deep (deeper than the Centaur pot). It can be made of 1/4 inch plate or
heavier as desired. The last one I made was made with the 2 sides of 5/8 inch
plate and the bottom was 3/8" plate. The bottom and ends do not
seem to deteriorate
as quickly as the sides (at least that is my experience with the blower
etc. that I
use). I do not know how long a mild steel firepot will last compared
to a good 3/4 inch thick cast iron firepot. I do know that mild steel melts at a much
higher temperature than does cast iron, but for some reason cast iron
works well for castings that get extremely hot and cold such as firepots, stoves, etc.
If a mild steel firepot deteriorates for some reason, a new piece of mild
steel can be welded in to replace the deteriorated metal - that can not be
easily done with cast iron.

These drawings do not include the air intake
piping which can be seen on "my portable
forge". The air intake piping is lightweight 3 inch round
or square. Square is easier to fabricate. Note that the
vertical pipe slants toward the fan. That slant helps keep the ash
etc. that falls through the clinker breaker from getting into the fan.
A weighted pivoting ash dump also needs to be fabricated for the bottom of
the vertical air intake pipe.

These drawings do not include a 1/4 inch by 2 inch flat mild steel rim
welded around the top which allows the firepot to set into the forge table
opening without falling through. Since firepots expand and contract
depending on their temperature, I usually do not fasten the firepot other
than to the air inlet piping.

These drawings do not include clinker breaker specifications (see
pictures below of a www.centaurforge.com/
clinker Breaker). The clinker
breaker design is up to the maker, but can be as simple as a mild steel
circle approx. 2 1/2 inches in diameter welded on top of a 1/2 inch round
handle.

DIMENSIONS ARE IN INCHES

Pictures showing Clinker
Breaker in Center of Firepot

The clinker breaker has a 1/2
inch hole drilled horizontally through it for the 1/2" rod/handle.
It is held in place by a bolt tapped into the side of the clinker breaker.

Bottom picture shows the clinker breaker in a turned position.
Normally it has a flat side up shown in the top picture. The clinker
breaker pivots on a 1/2 inch rod that has a turned down end
to serve as a handle. The handle is on the outside of the forge so
it can be reached. Bolt holding clinker breaker to 1/2" rod/handle
is on the third flat side of the breaker (not seen in picture).